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124. What influence does smoking have upon driving?
A. Harmful for safe driving
B. Increase concentration
C. Help relaxation
D. No effect on driving
Answer：A
Previous question: 123. Which of the following is a bad habit when changing lanes?
Next question: 125. When driving on a long downhill road, which is the best way to control the speed?
2025年摩托车科目四英文版题库共345题，你可以免费查看前50题，完整版题库请添加微信购买：
The English version of the 2025 motorcycle subject 4 question bank has a total of 345 questions. You can view the top 50 questions for free. Please add WeChat to purchase the complete version of the question bank.
科目四试题
- What is the meaning of this sign?
- When following other vehicles on a foggy day, what should the driver do?
- When discovering animals crossing the expressway on the highway, the driver should not drastically turn to evade.
- When a wounded person suffering burns is thirsty, he may drink a small quantity of slightly salty water.
- Once inflammable gas causes a fire disaster, it should be put out with water in good time.
- The drivers, loaders and supercargoes responsible for dangerous chemicals transportation should all full understand the chemical characteristics, potential risks, features of the packaging containers and emergency measures for any unexpected accidents.
- Which of the following method is correct to rescue an unconscious person?
- What is the meaning of this sign?
- When driving on a long downhill road, which is the best way to control the speed?
- When rescuing the persons who are losing blood, it is necessary to ______ first.
- When there is bleeding at the bone fracture of a wounded person, the first thing to do is to fix the wounded part in position, then stop the bleeding and dress the wound.
- When putting out a fire disaster that gives out erosive steam or poisonous gas, the firefighters should wear gas masks and other related protective articles and should operate from the windward side.
- When two vehicles approach each other on a foggy day, what is the best method of safe driving?
- What is the meaning of this sign?
- What is the meaning of this sign?
- When there is bleeding at the bone fracture of a wounded person, the first thing to do is to keep it in position before stopping the bleeding and dress the wound.